Two Lines That Disagree and Still Work

Write a melody. Now write a second one that happens at the same time, has its own shape, goes its own way, and doesn’t fight the first.

That’s counterpoint. Everything else is detail.

It has a reputation as a historical exercise, something you survive in a theory class and then leave behind. That reputation is wrong and it’s expensive, because counterpoint is the most direct technique available for making music that stays interesting on the fifth listen.

The four things that make it work

Independence. Each line has to survive on its own. Play either one alone and it should sound like a melody, not like the leftovers of a chord. If your second line only makes sense underneath the first, you’ve written an accompaniment.

Consonance and dissonance in balance. Dissonance isn’t a mistake, it’s the tension you build on purpose so that resolution means something. Music that’s all consonance is furniture. The skill is in placing the tension and then paying it off.

Voice leading. How each line moves from note to note. Small steps where possible, careful handling where lines converge, and every voice going somewhere rather than sitting there. Good voice leading is most of what separates counterpoint that sounds inevitable from counterpoint that sounds assembled.

The species. The traditional training runs through five species, from note-against-note at the simplest up to florid counterpoint at the most elaborate. The sequence exists because each stage removes one constraint at a time, and skipping ahead means learning several things at once and none of them properly.

Six steps to actually writing some

1. Start with one strong line

One melody. A motif, a shape, something with a character you could describe in a word.

Don’t start with two. Almost every failed counterpoint exercise I see starts with two mediocre lines instead of one good one, because the writer was thinking about the combination before they had anything to combine.

2. Write a line that disagrees

The second line should contrast with the first. When the first line moves, the second can hold. When the first climbs, the second can fall.

The instinct to make them match is strong and it’s the wrong instinct. Two lines doing the same thing is one line in a thicker font.

3. Use dissonance on purpose

Three devices to start with:

Passing tones, filling the gap between two chord tones on the way past. Appoggiaturas, landing on a dissonance and stepping off it, which is where a lot of the ache in music comes from. Suspensions, holding a note while the harmony moves underneath so it turns dissonant, and then resolving it down.

Suspensions are the one to learn first. They’re the most reliable way to make a plain progression feel like it matters.

4. Try a canon

A canon is the same melody entering in different voices at different times. It’s the strictest form of counterpoint and it’s also the fastest way to find out whether your melody is any good, because a weak line can’t survive being played against itself.

Vary two things: how far apart the entries are in time, and what interval the second voice enters on. Those two dials produce wildly different results from the same tune.

5. Add a third voice, then a fourth

Two voices is a conversation. Three is where it gets hard, because now every note has two relationships to manage instead of one.

Add voices one at a time and keep checking that each line still works alone.

6. Take apart music that already does it

Bach for density and inevitability. Palestrina for line and smoothness. Stravinsky for what happens when the language changes but the technique stays.

Don’t just listen. Take eight bars, write out the voices separately, and play each one on its own. You’ll hear immediately how much character a single inner line is carrying, and that’s the lesson.

Where it shows up outside the classroom

In jazz, as counter-melody and as the running conversation between soloist and rhythm section. A walking bass line against a horn line is counterpoint whether anybody calls it that.

In pop, in stacked vocal lines and in the interplay between a vocal and a guitar figure. The surface is simple, the good records aren’t.

In film scoring, where a counter-melody is the most efficient way to have two things be true at once. Triumph in the brass and doubt underneath it, at the same moment, without a word of dialogue.

In classical writing, where the tradition is oldest and the constraints are tightest, and where the constraints are the reason the results hold up.

Five habits

Write a line a day. Eight bars. It takes four minutes and it’s the whole discipline.

Play your lines separately, out loud. Every time. Problems that are invisible on the page are obvious in one hearing.

Record what you write. You cannot hear your own work accurately in your head straight after writing it. A recording a week later is a different and more honest listener.

Learn the rules before you argue with them. The restrictions are what generate ideas. Composers who skip the constraints usually end up with fewer options, not more.

Enjoy the dissonance. The rules exist to make tension mean something, not to remove it.

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